If Turing and his group had not weakened the U-boats' hold on the North Atlantic, the 1944 Allied invasion of Europe - the D-Day landings - could have been delayed, perhaps by about a year or even longer, since the North Atlantic was the route that ammunition, fuel, food and troops had to travel in order to reach Britain from America.
ncG1vNJzZmivp6x7o67CZ5qopV%2Bjsri%2Fjq2cnKCepLmws9hmaHFsYW6Den0%3D